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<ul id="index">
  <li><a href="#NAME">NAME</a></li>
  <li><a href="#SYNOPSIS">SYNOPSIS</a></li>
  <li><a href="#DESCRIPTION">DESCRIPTION</a></li>
  <li><a href="#OPTIONS">OPTIONS</a></li>
  <li><a href="#EXAMPLES">EXAMPLES</a></li>
  <li><a href="#NOTES">NOTES</a></li>
  <li><a href="#SEE-ALSO">SEE ALSO</a></li>
  <li><a href="#COPYRIGHT">COPYRIGHT</a></li>
</ul>

<h1 id="NAME">NAME</h1>

<p>openssl-pkeyparam, pkeyparam - public key algorithm parameter processing tool</p>

<h1 id="SYNOPSIS">SYNOPSIS</h1>

<p><b>openssl</b> <b>pkeyparam</b> [<b>-help</b>] [<b>-in filename</b>] [<b>-out filename</b>] [<b>-text</b>] [<b>-noout</b>] [<b>-engine id</b>] [<b>-check</b>]</p>

<h1 id="DESCRIPTION">DESCRIPTION</h1>

<p>The <b>pkeyparam</b> command processes public key algorithm parameters. They can be checked for correctness and their components printed out.</p>

<h1 id="OPTIONS">OPTIONS</h1>

<dl>

<dt id="help"><b>-help</b></dt>
<dd>

<p>Print out a usage message.</p>

</dd>
<dt id="in-filename"><b>-in filename</b></dt>
<dd>

<p>This specifies the input filename to read parameters from or standard input if this option is not specified.</p>

</dd>
<dt id="out-filename"><b>-out filename</b></dt>
<dd>

<p>This specifies the output filename to write parameters to or standard output if this option is not specified.</p>

</dd>
<dt id="text"><b>-text</b></dt>
<dd>

<p>Prints out the parameters in plain text in addition to the encoded version.</p>

</dd>
<dt id="noout"><b>-noout</b></dt>
<dd>

<p>Do not output the encoded version of the parameters.</p>

</dd>
<dt id="engine-id"><b>-engine id</b></dt>
<dd>

<p>Specifying an engine (by its unique <b>id</b> string) will cause <b>pkeyparam</b> to attempt to obtain a functional reference to the specified engine, thus initialising it if needed. The engine will then be set as the default for all available algorithms.</p>

</dd>
<dt id="check"><b>-check</b></dt>
<dd>

<p>This option checks the correctness of parameters.</p>

</dd>
</dl>

<h1 id="EXAMPLES">EXAMPLES</h1>

<p>Print out text version of parameters:</p>

<pre><code>openssl pkeyparam -in param.pem -text</code></pre>

<h1 id="NOTES">NOTES</h1>

<p>There are no <b>-inform</b> or <b>-outform</b> options for this command because only PEM format is supported because the key type is determined by the PEM headers.</p>

<h1 id="SEE-ALSO">SEE ALSO</h1>

<p><a href="../man1/genpkey.html">genpkey(1)</a>, <a href="../man1/rsa.html">rsa(1)</a>, <a href="../man1/pkcs8.html">pkcs8(1)</a>, <a href="../man1/dsa.html">dsa(1)</a>, <a href="../man1/genrsa.html">genrsa(1)</a>, <a href="../man1/gendsa.html">gendsa(1)</a></p>

<h1 id="COPYRIGHT">COPYRIGHT</h1>

<p>Copyright 2006-2019 The OpenSSL Project Authors. All Rights Reserved.</p>

<p>Licensed under the OpenSSL license (the &quot;License&quot;). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <a href="https://www.openssl.org/source/license.html">https://www.openssl.org/source/license.html</a>.</p>


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